Patent GB-932756-A (GB)
Title: Improvements in or relating to glass article-forming apparatus
Inventor: MENNITT JOSEPH LEONARD
IPC: C03B9/193
Filed: 1959-11-14
Abstract: 932,756. Glass moulding apparatus. OWENS-ILLINOIS GLASS CO. Nov. 14, 1959, No. 38670/59. Class 56. Glass moulding apparatus comprises a plurality of mould components carried by individual members, including a pair of hinged mould support arms, and operable to bring said components into co-operative rotation to each other, separate locking mechanisms being installed on said support arms and arranged to co-operate with the said members to lock them so that the said components are in accurate alignment with each other. Fig. 4 shows, in horizontal section a pair of arms 40, 41, each carrying lugs mounted on a vertical pivot 42 and carrying the respective halves 43, 44 of moulds located behind lugs 47, 48 carried on the arms. Passages within the arms 40, 41 and around the mould members 43, 44 provide for the circulation of cooling air. The lugs around the pivot 42 carry toothed sectors, not shown, engaged by slidable racks, mounted on the fixed part of the machine, which can be actuated by fluid pressure to open and close the arms. The half-moulds 44 are located against blocks 50, 51, while the halves 43 can be held against them by plugs 56 operated by fluid pressure operated pistons. The arms 40, 41 can be latched together by a sliding latch member 202 carried by arm 40 having a number of fingers movable, by sliding the member 202 vertically into locking engagement behind fingers on the arm 41. The necessary movement of the member 202 is produced by a fluidpressure cylinder, in the base of the apparatus below the arms, connected to the member 202 through a sliding connection which permits the movement of the arm 40. As the arms 40, 41 close the lower ends of the moulds 43, 44 move up chamfered surfaces 46b on a neck mould 88 carried by the members 14 forming part of the parison transfer mechanism. When they are closed, two semi-circular yokes 90, 91 carried by the respective arms and having chamfered inner surfaces which engage similar surfaces formed at the bottom of the mould members 43, 44 and the top of the plunger operating cylinder 92. The yokes 90, 91 are pressed together by fluid pressure cylinders, not shown, to hold the various mould parts in close engagement. At this time the baffle 131 is not yet in position over the mould, to which a gob of glass is now admitted between guides 65, 66. The baffle 131 is now slid into the position shown by rotating a shaft 148 carrying an eccentrically mounted tube 143 to which the baffle is pivoted. The rotation is effected by a fluid pressure operated rack 157 engaging a toothed member 150. At the same time the channel-shaped members 70, 71, are pressed together by other fluid pressure cylinders, not shown. These members have inclined webs which engage the gob guides 65, 66 and force them down on to the baffle 131 to secure it. A plunger 230 is now forced up into the gob of glass by a piston to shape the gob of glass into the parison. A timing mechanism comprising valves actuated by a rotating cam assembly secures the operation of the various parts of the mechanism in the necessary sequence.